作者frankwu0507 (....)
看板Biology
標題[問題] 普生 生態
時間Wed Jul 10 15:07:37 2013
【問題】：
You are observing a population of lizards
when you notice that the number of adults has increased
and is higher than previously observed.
One explanation for such an observation would include ____.
(A) increased birth rate
(B) decreased emigration
(C) increased emigration
(D) increased immigration
(E) reduction in death rate
答案是 (D)
【個人看法】：
我覺得 C 會讓族群減少
A 跟 E 增加的會不只是成獸
我的問題是 B (source population) 跟 D (sink population)
應該都是有可能的選項
為什麼選D呢?
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